LS DYNA

I amtrying to model a simple compression test om a foam cube with LS DYNA. I have tried a lot of different approaches but there is always something wrong in the model :(. I have managed to get on model up and running, but i am having problems with excessive penetrations! Do anyone have any idea how to fix this?

I'm using elastic solid elements to model wave propagation in an
structure in LS-DYNA. I need to add the effect of dissipation in the
system by using viscoelastic material model (MAT_006). All I know from
my material is storage & loss modulus (E=E'+E"*i). I was wondering
how can I transform these parameters into G0, GI and BETA needed by
MAT_006 (G=Gi+(G0-Gi)*exp(-beta*t))?

hi how r u im doing a project based on landing gear struts system . i want to replace hydralic landing gear system by spring damper system in ls dyna . plz guys i need urgent help i m short ov time plzzz help me out

hello im a M-Tech student..i need help regaring LS DYNA.i want to model a composite plate with the orientations[0/45/-45/90] i want apply the orientations and how to view the orientations of the plies. and i want know how to predict delaminations when it is impacted by a rigid ball...in LS DYNA..plz help me out

i need a big help. . .im having problems . . .in my problem there is a stationary block at origin . . . a prisim is falling from some height . . . the problem is its workin fine . ..EXCEPT. . the prism is going through the block . . . i REALLY need help